SEAKING 120A V4 ESC

Whether you're carving tight turns or blazing in a straightaway, the Seaking 120A V4 delivers smooth, consistent power and unmatched reliability in a sleek, ultra-narrow profile. With advanced software optimization, IP67 waterproofing, real-time Bluetooth monitoring, and intelligent thermal protections, this ESC is tailor-made for serious RC boaters and racing enthusiasts alike.

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Key Features

Reinforced Hardware, Enhanced Software

Built on a robust hardware foundation, the Seaking 120A V4 uses upgraded software control strategies specifically engineered for the intense demands of marine applications—keeping performance high and the risk of failure low.

IP67 Waterproof & Dustproof

• Fully sealed to handle water, spray, mud, and sand

• No additional waterproofing needed—ready to race out of the box

High-Performance Built-In BEC

• Switch-mode BEC with high current output

• Adjustable voltage levels (e.g., 6V / 7.4V / 8.4V*)

• Effortlessly powers high-voltage servos and other onboard electronics

*Exact voltage steps may vary by model; confirm in manual.

Slimmer, Smarter Design

• 120A V4 width: 23mm

• 8% narrower than previous V3 models

• Fits better into narrow hulls and tight layouts

Bluetooth Telemetry (via OTA Module)

• Connect an OTA Bluetooth module (sold separately)

• Monitor real-time data: throttle, voltage, ESC temp, motor RPM, and more

• View historical performance data as easy-to-read graph curves

• No laptop or card required—tune via the HW Link app (iOS/Android)

Capacitor Overheat Protection

• Built-in protection monitors capacitor temperature

• Prevents overloading damage and extends ESC lifespan

Freewheeling Function

• Reduces ESC temperatures during high-speed throttle release

• Improves deceleration and cornering control

• Helps maintain consistent performance in racing conditions

Real-Time Channel-Based Parameter Adjustment

• Use a spare channel on your transmitter to:

  • Adjust settings like reverse thrust on the fly

  • Adapt quickly to changing water or racing conditions—no pit stop needed

Upgradeable Firmware & Wide Programmability

• Supports firmware updates via USB LINK software or HW Link mobile app
  (requires optional LCD program box or OTA module)

• 11 programmable parameters including:

  • Start mode

  • Timing

  • Brake options

  • Reverse settings

  • Freewheeling mode and more

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Technical Specifications

Specification	Details
Type	Brushless Marine ESC
Model	Seaking 120A V4
Continuous Current	120A
Peak Current	120A/500A
Input Voltage	2–6S LiPo
BEC Output	6V / 7.4V / 8.4V@8A
Waterproof Rating	IP67
Telemetry Support	Yes (via optional OTA Bluetooth Module)
Programming Options	11 parameters via app or program box
Size	Width: 23mm
Weight	123.5g
Reverse Thrust	Real-time adjustable via radio channel

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Ideal Applications

• 1/18 to 1/10 scale RC boats

• Compact or narrow-hull designs

• Hobbyists who want on-the-go tuning and live performance data

• Entry to mid-level racing setups

 

SpecificationsType
Brushed/Brushless: Brushless
Sensored/Sensorless: Sensorless
Waterproof: Waterproof

Specifications
Cont./Peak Current: 120A/500A
Input Voltage: 2-6S Lipo
BEC Output: 6V/7.4V/8.4V@8A

Wires & Connectors
Input Wires: Red-12AWG-150mmx1,Black-12AWG-150mmx1
Output Wires: Black-12AWG-100mmx3
Input Connectors: No
Output Connectors: 4.0mm Gold female plug

Esc Programming Via
LED Program Box: Supported
LCD G2 Program Box: Supported
LCD Pro: Supported
OTA Programmer: Supported
Program Port: Throttle signal wire+Yellow signal cable

Data Recording
Extreme Value: Supported
Real-Time Data: Supported
Historical Data (Graph): Supported

Firmware
Firmware Upgrade: Supported

Size & Weight
Size: 64.7x36.3x22.5mm
Weight: 123.5g(Including wire and output plug)

Applications
Boat Applicable: ≤100CM